.exchange {
  width: 100%;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  background: #F7F7F7;
  align-items: center;

  header {
    width: 750px;
    height: 130px;
    background: #FFFFFF;
    box-shadow: 0px -4px 16px -2px rgba(0, 0, 0, 0.11);
    border-radius: 0px 0px 40px 40px;
    display: flex;
    align-items: center;
    box-sizing: border-box;
    padding: 0 170px;
    justify-content: space-between;
    position: fixed;
    div {
      color: rgba(184, 183, 237, 1);
      font-size: 36px;
      font-family: PingFangSC-Semibold,
      PingFang SC;
      font-weight: 600;
      position: relative;
      z-index: 1;
      line-height: 50px;
      transition: all 0.3 linear;
      &.active{
        color: #3936D6;
        &::after {
          position: absolute;
          bottom: 0;
          left: 0;
          content: "";
          height: 20px;
          background: #FFD500;
          width: 100%;
          z-index: -1;
        }
      }
    }
  }
  .bottom{
    height: 130px;
  }
  nav{
    display: flex;
    justify-content: space-between;
    width: 694px;
    margin: 0 auto;
    margin-top: 30px;
    background-image: url("./img/Bitmap.png");
    background-size: 100% 100%;
    background-position: center;
    box-sizing: border-box;
    height: 74px;
    padding: 0 126px;
    div {
      display: flex;
      align-items: center;
      img{
        width: 26px;
        height: 26px;
        object-fit: cover;
        margin-right: 12px;
      }
      span {
        font-size: 24px;
        font-family: PingFangSC-Semibold,
        PingFang SC;
        font-weight: 600;
        color: #39378C;
      }
    }
  }
  .list{
    width: 694px;
    margin: 0 auto;
    margin-top: 20px;
    display: grid;
    grid-template-columns: repeat(2,1fr);
    grid-gap: 20px 18px;
    >div {
      min-height: 472px;
      background: #FFFFFF;
      border-radius: 8px;
      display: flex;
      flex-direction: column;
      justify-content: flex-start;
      box-sizing: border-box;
      padding-top: 24px;
      padding-bottom: 18px;
      padding-left: 20px;
      >img {
          width: 240px;
          height: 156px;
          align-self: center;
      }
      p {
        font-size: 32px;
        font-family: PingFangSC-Regular,
        PingFang SC;
        font-weight: 400;
        color: #333333;
        line-height: 44px;
        margin: 0;
        margin-top: 34px;
        margin-bottom: 8px;
      }
      i {
        font-size: 20px;
        font-family: PingFangSC-Regular,
        PingFang SC;
        font-weight: 400;
        color: #333333;
        line-height: 28px;
        font-style: normal;
      }
      >div {
        margin-top: 20px;
         span {
           &:first-child{
            font-size: 44px;
            font-family: PingFangSC-Semibold,
            PingFang SC;
            font-weight: 600;
            color: #DAB500;
            line-height: 60px;
           }
           &:last-child {
            font-size: 20px;
            font-family: PingFangSC-Semibold,
            PingFang SC;
            color: #DAB500;
            line-height: 60px;
            margin-left: 10px;
           }
         }
      }
      >button {
        width: 280px;
        height: 60px;
        background: linear-gradient(180deg, #FFE875 0%, #DDB941 55%, #9F7B22 100%);
        border-radius: 30px;
        border: none;
        font-size: 32px;
        font-family: PingFangSC-Medium,
        PingFang SC;
        font-weight: 500;
        color: #FFFFFF;
      }
    }
  }
}